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https://issues.apache.org/jira/browse/BEAM-1182?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Thomas Groh resolved BEAM-1182.
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Resolution: Fixed
Fix Version/s: First stable release
> Direct runner should enforce encodability of unbounded source checkpoints
> -------------------------------------------------------------------------
>
> Key: BEAM-1182
> URL: https://issues.apache.org/jira/browse/BEAM-1182
> Project: Beam
> Issue Type: Improvement
> Components: runner-direct
> Reporter: Eugene Kirpichov
> Assignee: Thomas Groh
> Fix For: First stable release
>
>
> As far as I can tell,
> https://github.com/apache/incubator-beam/blob/master/runners/direct-java/src/main/java/org/apache/beam/runners/direct/UnboundedReadEvaluatorFactory.java
> currently uses the reader's getCheckpoint() only as an in-memory object,
> i.e. it's not exercising that 1) the checkpoint can be encoded at all, and 2)
> that the reader can be resumed from an encoded/decoded checkpoint.
> I've seen cases in code reviews where people implemented a non-serializable
> checkpoint, and direct runner tests didn't catch that because of this issue.
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